Free Returns are available for the selected shipping address. You can return the item for free for any reason as long as it is in new and unused condition. View your orders and start the return. Choose the return method and send. Self-tapping screws: The head of the self-tapping screw is very strong, the thread is sharp and easy to penetrate. Suitable for metal plates, plastics, wood, and other materials. The screws are made of carbon steel and nickel-plated materials with high hardness and good corrosion resistance, ensuring long-term use. Universal 8 sizes: Screws come in 8 common lengths: M2 x 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, and 20mm. 125 screws of each length, 1,000 in total, sufficient for everyday use. Cross drive head: The crosshead provides higher tightening torque, ensuring even stress distribution and reduced slippage. The Phillips hole is deep and easy to tighten. Storage box: 1,000 countersunk wood screws are packed in a plastic storage box with compartments. Each grid is marked with the corresponding size for easy sorting, storage, and quick access to the desired screw. Wide range of applications: These self-tapping screws are ideal for repairing door handles, windows, and appliances in homes and offices. They are also widely used in woodworking, electronics, electrical, machinery, metallurgy, molds, hydraulics, and other industrial applications.